COSRX Ultimate Nourishing Rice Overnight Spa Mask is a leave-on sleeping mask formulated with 68% rice extract and 2% niacinamide. The rice extract provides moisture and nourishment, while niacinamide supports a more even skin tone and improved skin barrier function. This overnight mask is designed to be applied as the final step in an evening skincare routine, allowing the ingredients to work while the skin is at rest. The texture is lightweight and non-greasy, absorbing without leaving a sticky residue. It suits a variety of skin types, including dry, dehydrated, and combination skin, and can be used by those seeking a simple yet effective overnight hydration treatment. The product is free from animal testing and is manufactured in Korea, adhering to a formulation that prioritizes gentle, naturally derived ingredients. The 60ml size offers a practical amount for nightly use over several weeks. It is suitable for individuals looking to maintain skin softness and resilience overnight without heavy layering. This mask does not contain parabens, sulfates, or phthalates. Its scent is mild, derived from natural components rather than added fragrances. Users may apply a thin layer after moisturizer and rinse in the morning, or use it as a rich cream in place of a night moisturizer. The rice extract component provides antioxidants that help protect the skin from environmental stress, while the niacinamide contributes to a balanced complexion. The formula is designed to support the skin’s natural repair process without causing irritation. It is not a treatment for specific skin conditions, but rather a supporting product for general nourishment and moisture retention. The packaging is a tube with a secure cap, convenient for hygienic dispensing. This product is intended for those who want to incorporate a Korean skincare approach to overnight hydration using minimal, clearly listed ingredients. The neutral pH helps maintain skin balance. It is not recommended for those with a known allergy to rice or niacinamide. No immediate visible results are claimed; regular use may contribute to improved skin texture and hydration over time. The product offers a straightforward solution for adding moisture and nourishment to a nighttime routine without the need for multiple layers.